OPC UA Local Discovery Server 

OPC UA Local Discovery Server is a special OPC-UA service that provides information about other OPC-UA servers available. If you want to retrieve a list of OPC Unified Architecture servers registered on a local or remote computer, call the DiscoverServers method, passing it the name or address of the remote machine (use empty string for local computer). Is easy to install and it not requires some special skills to manipulate it.